docs: update KB and project docs with 2026-02-11 progress
- KB Gen 003: NX version (DesigncenterNX 2512), first real results
- sol101-static.md: path resolution lessons, in-place solving, result extraction confirmed
- CONTEXT.md: solver pipeline operational, first results (disp=17.93mm, stress=111.9MPa)
- DECISIONS.md: DEC-HB-008 to DEC-HB-011 (backup/restore, iteration arch, history DB, git workflow)
- optimization_engine/README.md: created (DesigncenterNX support, path resolution, NX file refs)
- studies/01_doe_landscape/README.md: updated architecture, iteration folders, history DB
- _index.md: closed gaps G3,G4,G6,G10-G14, updated generation to 003
Antoine
2fde08daab